Method Details

* format: The date format string (%month%/%day%/%year% by default)
* years: An array of years for the year select tag (optional)
Be careful that the keys must be the years, and the values what will be displayed to the user
* months: An array of months for the month select tag (optional)
* days: An array of days for the day select tag (optional)
* can_be_empty: Whether the widget accept an empty value (true by default)
* empty_values: An array of values to use for the empty value (empty string for year, month, and day by default)